I have a little problem here. Picked up a used 14" Excellerator II coil a number of months ago (for water hunting) and it worked great.. at first. Now, for some reason, all it does is overload when the sensitivity is set past 2 (used to be able to max it), and can barely see a copper penny at 2" in the air. One thing I've noticed is, unlike my other coils, one set of pins reads 4.1 Ohms vs. 3 something on the other coils. It's a shot in the dark, but I think the coil is hooped. Anyone? ..Willy. (BTW, it overloaded with both the M6 and MXT, so I doubt that it's my detector at fault)